steering INFINITI QX4 2005 Factory User Guide

ACS-60
[ICC]
REMOVAL AND INSTALLATION
Revision: October 20052005 QX56
REMOVAL AND INSTALLATIONPFP:00000
ICC UnitEKS00BMV
ICC SensorEKS00BMW
CAUTION:
Perform the laser beam aiming procedure every time the ICC sensor is removed or installed.
ICC Steering SwitchEKS00BMX
Replace ICC steering switch as switch kit assembly. Refer to AV- 4 7 , "Removal and Installation of Steering
Wheel Audio Control Switches" .
WKIA1914E
LKIA0631E

ATC-158
HEATER & COOLING UNIT ASSEMBLY
Revision: October 20052005 QX56
7. Move the two front seats to the rearmost position on the seat track.
8. Remove the instrument panel and console panel. Refer to IP-10, "
INSTRUMENT PANEL ASSEMBLY" .
9. Remove the steering column. Refer to PS-10, "
STEERING COLUMN" .
10. Disconnect the instrument panel wire harness at the RH and LH in-line connector brackets, and the fuse
block (J/B) electrical connectors. Refer to PG-4, "
POWER SUPPLY ROUTING CIRCUIT" .
11. Disconnect the steering member from each side of the vehicle body.
12. Remove the front heater and cooling unit assembly with it attached to the steering member, from the vehi-
cle.
CAUTION:
Use care not to damage the seats and interior trim panels when removing the front heater and
cooling unit assembly with it attached to the steering member.
13. Remove the front heater and cooling unit assembly from the steering member.
Installation
Installation is in the reverse order of removal.
CAUTION:

Replace the O-ring of the low-pressure pipe and high-pressure pipe with a new one, and apply
compressor oil to it when installing it.

After charging the refrigerant, check for leaks.
NOTE:

Fill the engine cooling system with the specified coolant mixture. Refer to MA-14, "REFILLING ENGINE
COOLANT" .

Recharge the A/C system. Refer to ATC-175, "Evacuating System and Charging Refrigerant" .
REAR HEATER AND COOLING UNIT ASSEMBLY
Removal
1. Discharge the refrigerant from the A/C system. Refer to ATC-175, "Discharging Refrigerant" .
2. Drain the coolant from the engine cooling system. Refer to MA-13, "
DRAINING ENGINE COOLANT" .
3. Disconnect the rear heater core hoses from the rear heater core.
4. Disconnect the rear A/C pipes from the rear expansion valve.
5. Remove the rear RH interior trim panel. Refer to EI-35, "
BODY
SIDE TRIM" .
6. Disconnect the following electrical connectors:

Rear blower motor

Rear blower motor resistor

Rear air mix door motor
7. Disconnect the ducts from the rear heater and cooling unit
assembly.
8. Remove the rear heater and cooling unit assembly.
Installation
Installation is in the reverse order of removal.
CAUTION:

Replace the O-ring of the low-pressure pipe and high-pressure pipe with a new one, and apply
compressor oil to it when installing it.

After charging the refrigerant, check for leaks.
NOTE:

Fill the engine cooling system with the specified coolant mixture. Refer to MA-14, "REFILLING ENGINE
COOLANT" .

Recharge the A/C system. Refer to ATC-175, "Evacuating System and Charging Refrigerant" .
Removal and Installation for Rear Heater Core PipesEJS00536
REMOVAL
1. Drain the coolant from the engine cooling system. Refer to CO-10, "DRAINING ENGINE COOLANT" .
2. Remove the upper and lower luggage RH side finisher. Refer to EI-35, "
BODY SIDE TRIM"
LJIA0021E

ATC-164
INTAKE DOOR MOTOR
Revision: October 20052005 QX56
INTAKE DOOR MOTORPFP:27730
Removal and InstallationEJS003YJ
Intake Door Motor - Front Heater and Cooling Unit Assembly
REMOVAL
1. Remove the front heater and cooling unit assembly. Refer to ATC-157, "FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
2. Remove the steering member from the front heater and cooling unit assembly.
3. Disconnect the intake door motor electrical connector.
4. Remove the three screws and remove the intake door motor.
INSTALLATION
Installation is in the reverse order of removal.
LJIA0139E
1. Front heater and cooling unit assembly 2. Intake door motor 3. Air mix door motor (passenger)
4. Variable blower control 5. Air mix door motor (driver) 6. Mode door motor
7. Defroster door motor

AIR MIX DOOR MOTOR
ATC-167
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FRONT AIR MIX DOOR MOTOR (PASSENGER)
Removal
1. Remove the front heater and cooling unit assembly. Refer to ATC-157, "FRONT HEATER AND COOLING
UNIT ASSEMBLY" .
2. Remove the steering member from the front heater and cooling unit assembly.
3. Disconnect the air mix door motor electrical connector.
4. Remove the three screws and remove the air mix door motor.
Installation
Installation is in the reverse order of removal.
REAR AIR MIX DOOR MOTOR
Removal
1. Remove the RH rear interior trim panel. Refer to EI-35, "BODY SIDE TRIM" .
2. Disconnect the rear air mix door motor electrical connector.
3. Remove the three screws and remove the rear air mix door
motor.
Installation
Installation is in the reverse order of removal.
LJIA0021E

AV-1
AUDIO, VISUAL, NAVIGATION & TELEPHONE SYS-
TEM
K ELECTRICAL
CONTENTS
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SECTION AV
A
B
AV
Revision: October 20052005 QX56 PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 4
Wiring Diagrams and Trouble Diagnosis .................. 4
PREPARATION ........................................................... 5
Commercial Service Tool ......................................... 5
AUDIO ......................................................................... 6
Component Parts and Harness Connector Location ..... 6
System Description .................................................. 7
REAR AUDIO REMOTE CONTROL UNIT ........... 7
SATELLITE RADIO TUNER (PRE-WIRING) ........ 8
SPEED SENSITIVE VOLUME SYSTEM .............. 8
Schematic ................................................................ 9
Wiring Diagram — AUDIO — ................................. 10
Terminals and Reference Value for Audio Unit ....... 19
Terminals and Reference Value for BOSE Speaker
Amp. ....................................................................... 22
Terminals and Reference Value for Rear Audio
Remote Control Unit ............................................... 24
Terminals and Reference Value for AV Switch ....... 25
AV Switch Self-Diagnosis Function ........................ 27
STARTING THE SELF-DIAGNOSIS MODE ....... 27
EXITING THE SELF-DIAGNOSIS MODE ........... 27
DIAGNOSIS FUNCTION ..................................... 27
Trouble Diagnosis .................................................. 28
MALFUNCTION WITH RADIO AND CD ............. 28
FOR RADIO ONLY .............................................. 28
FOR CD ONLY .................................................... 29
Noise Inspection ..................................................... 29
TYPE OF NOISE AND POSSIBLE CAUSE ........ 29
Power Supply Circuit Inspection ............................ 30
Steering Switch Check ........................................... 32
AV Switch Check .................................................... 33
Audio Communication Line Check ......................... 33
Sound Is Not Heard From Front Door Speaker or
Front Tweeter ......................................................... 34
Sound Is Not Heard From Rear Door Speaker or
Rear Door Tweeter ................................................. 38
Sound Is Not Heard From Center Speaker ............ 41Sound Is Not Heard From Subwoofer .................... 42
Removal and Installation for Audio Unit ................. 45
Removal and Installation for AV Switch .................. 45
Removal and Installation of Front Door Speaker .... 45
Removal and Installation of Rear Door Speaker .... 45
Removal and Installation of Front Tweeter ............. 46
Removal and Installation of Rear Door Tweeter ..... 46
Removal and Installation of Center Speaker .......... 46
Removal and Installation of Subwoofer .................. 46
Removal and Installation of BOSE Speaker Amp. ... 46
Removal and Installation of Rear Audio Remote
Control Unit ............................................................. 47
Removal and Installation of Steering Wheel Audio
Control Switches ..................................................... 47
AUDIO ANTENNA .................................................... 48
System Description ................................................. 48
Wiring Diagram — W/ANT — ................................. 49
Location of Antenna ................................................ 50
Window Antenna Repair ......................................... 50
ELEMENT CHECK .............................................. 50
ELEMENT REPAIR ............................................. 51
DVD ENTERTAINMENT SYSTEM ............................ 52
Component Parts and Harness Connector Location ... 52
System Description ................................................. 53
Schematic ............................................................... 54
Wiring Diagram — DVD — ..................................... 55
Trouble Diagnosis ................................................... 58
Power Supply Circuit Inspection ............................. 59
Removal and Installation of DVD Player ................ 60
Removal and Installation of Video Monitor ............. 60
NAVIGATION SYSTEM ............................................. 61
System Description ................................................. 61
TRAVEL DISTANCE ............................................ 61
TRAVEL DIRECTION .......................................... 61
MAP-MATCHING ................................................. 61
GPS (GLOBAL POSITIONING SYSTEM) .......... 62
COMPONENT DESCRIPTION ............................ 63
BIRDVIEW™ ....................................................... 63
MAP DISPLAY ..................................................... 64
FUNCTION OF CENTER SWITCH ..................... 65

AV-3
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AV
Revision: October 20052005 QX56 Previous NAVI Conditions are Not Stored ............ 146
Previous Vehicle Conditions are Not Stored ........ 146
Position of Current Location Mark is Not Correct . 146
Radio Wave From GPS Satellite is Not Received . 146
Driving Test .......................................................... 147
Example of Symptoms Judged Not Malfunction .. 148
BASIC OPERATION ......................................... 148
VEHICLE MARK ............................................... 148
DESTINATION, PASSING POINTS, AND MENU
ITEMS CANNOT BE SELECTED/SET ............. 149
VOICE GUIDE ................................................... 149
ROUTE SEARCH .............................................. 150
EXAMPLES OF CURRENT-LOCATION MARK
DISPLACEMENT .............................................. 151
CURRENT LOCATION MARK SHOWS A POSI-
TION WHICH IS COMPLETELY WRONG ........ 154
CURRENT-LOCATION MARK JUMPS ............. 154
CURRENT LOCATION MARK IS IN A RIVER OR
SEA ................................................................... 155
WHEN DRIVING ON SAME ROAD, SOME-TIMES CURRENT-LOCATION MARK IS IN
RIGHT PLACE AND SOMETIMES IT IS WRONG
PLACE ...............................................................155
LOCATION CORRECTION BY MAP-MATCH-
ING IS SLOW ....................................................155
ALTHOUGH GPS RECEIVING DISPLAY IS
GREEN, VEHICLE MARK DOES NOT RETURN
TO CORRECT LOCATION ................................155
NAME OF CURRENT PLACE IS NOT DIS-
PLAYED .............................................................155
CONTENTS OF DISPLAY DIFFER FOR BIRD-
VIEW™ AND THE (FLAT) MAP SCREEN ........155
Program Loading of NAVI Control Unit .................156
Removal and Installation of NAVI Control Unit .....157
Removal and Installation of GPS Antenna ...........157
Removal and Installation of Steering Wheel Switch .157
Removal and Installation of AV Switch .................158
Removal and Installation of Display Unit ..............158
Removal and Installation of Display Control Unit . 158

AUDIO
AV-7
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AV
Revision: October 20052005 QX56
System DescriptionEKS00BI8
Refer to Owner's Manual for audio system operating instructions.
Power is supplied at all times

through 15A fuse [No. 17, located in the fuse block (J/B)]

to subwoofer terminal 6

through 20A fuse [No. 31, located in the fuse and fusible link box]

to audio unit terminal 6

to BOSE speaker amp. terminal 1

to AV switch terminal 1 and

to display control unit terminal 1.
With the ignition switch in the ACC or ON position, power is supplied

through 10A fuse [No. 4, located in the fuse block (J/B)]

to audio unit terminal 10 and

to AV switch terminal 2 and

to display control unit terminal 10.
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No. 12, located in the fuse block (J/B)]

to display control unit terminal 12.
Ground is supplied through the case of the audio unit.
Ground is also supplied

to subwoofer terminal 5

through body grounds B7 and B19 and

to BOSE speaker amp. terminal 17

to AV switch terminal 5 and

to display unit terminal 1 and

to display control unit terminal 3

through body grounds M57, M61 and M79.
Then audio signals are supplied

through audio unit terminals 1, 2, 3, 4, 13, 14, 15 and 16

to BOSE speaker amp. terminals 23, 24, 25, 26, 27, 28, 29 and 30.
Audio signals are amplified by the BOSE speaker amp.
The amplified audio signals are supplied

through BOSE speaker amp. terminals 2, 3, 9,10,11,12, 13, 14, 15, 16, 18 and 19

to terminals + and - of front door speaker LH and RH and

to terminals + and - of front tweeter LH and RH and

to terminals + and - of center speaker and

to terminals + and - of rear door speaker LH and RH and

to terminals + and - of rear door tweeter LH and RH and

to terminals 1 and 2 of subwoofer.
When one of steering wheel audio control switches is pushed, the resistance in steering switch circuit changes
depending on which button is pushed.
REAR AUDIO REMOTE CONTROL UNIT
Power is supplied

from audio unit terminal 32

to rear audio remote control unit terminal 13.
Ground is supplied

to rear audio remote control unit terminal 15

through body grounds B117 and B132.
Audio signals are supplied

AUDIO
AV-25
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AV
Revision: October 20052005 QX56
Terminals and Reference Value for AV SwitchEKS00BIE
Te r m i n a l N o .
(Wire color)
ItemSignal
input/
outputCondition
Voltag e
(Approx.)Example of
symptom
+–Ignition
switchOperation
1 (Y) GroundBattery
powerInput OFF – Battery voltageSystem does not
work properly.
2 (V) Ground ACC signal Input ACC – Battery voltageSystem does not
work properly.
3 (R/L) GroundIllumination
signalInput OFFLighting switch is
ON (position 1).Battery voltageAV switch illumi-
nation does not
come on when
lighting switch is
ON (position 1). Turn lighting switch
OFF.Approx. 3.0V or less
4 (BR) GroundIllumination
control signalInput ONIllumination control
switch is operated
by lighting switch in
1st position.Changes between 0 and 12V.AV switch illumi-
nation cannot be
controlled.
5 (B) Ground Ground – ON – 0V –
6 (V) GroundCommunica-
tion signal (+)Input/
outputON –System does not
work properly.
7–Shield
ground–– – –
8 (LG) GroundCommunica-
tion signal (-)Input/
outputON –System does not
work properly.
12 (R) GroundRemote con-
trol AInput ONPress MODE
switch 0V
Steering wheel
audio controls
do not function. Press SEEK UP
switch0.75V
Press VOL UP
switch2V
Except for above 5V
13 (G) GroundRemote con-
trol BInput ONPress POWER
switch 0V
Steering wheel
audio controls
do not function. Press SEEK
DOWN switch0.75V
Press VOL DOWN
switch2V
Except for above 5V
14 (L) –Remote con-
trol ground–– – –Steering wheel
audio controls
do not function.
16 (W/B) GroundCD EJECT
signalOutput ONPressed 0V
CD eject does
not function.
Released 5V
SKIA0175E
SKIA0176E

AUDIO
AV-27
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AV
Revision: October 20052005 QX56
AV Switch Self-Diagnosis FunctionEKS00BIF
It can check ON/OFF operation of each switch in the AV switch and diagnose the input signals from the steer-
ing switch.
STARTING THE SELF-DIAGNOSIS MODE
1. Turn ignition switch from OFF to ACC.
2. Within 10 seconds press and hold the switches “PAUSE/MUTE”
and “PREV” simultaneously for 3 seconds.
Then the self-diagnosis operates. A single beep indicates self-
diagnosis mode is active.
3. Press each switch and listen for beep.
NOTE:
CD player LOAD and EJECT buttons are not included in this test
and will not beep when pressed.
EXITING THE SELF-DIAGNOSIS MODE
Turn ignition switch OFF. Then the self-diagnosis ends.
DIAGNOSIS FUNCTION

It can check for continuity of the switches by sounding the beep when each AV switch and steering switch
is pressed.

It can check for continuity of harness between AV switch and steering switch.
WKIA1489E

AV-28
AUDIO
Revision: October 20052005 QX56
Trouble DiagnosisEKS00BIG
The majority of the audio troubles are the result of outside causes (bad CD, electromagnetic interference,
etc.). Check the inspection items below to diagnose the malfunction.
MALFUNCTION WITH RADIO AND CD
Before proceeding, confirm that other AV switch functions (except audio functions) operate. If not, refer to AV-
145, "Unable to Operate All of AV Switches (Unable to Start Self-Diagnosis)" .
FOR RADIO ONLY
Symptom Possible cause
Inoperative

Audio unit power circuit check. Refer to AV-30, "Power Supply Circuit
Inspection" .

Audio communication line check. Refer to AV-126, "Audio Communication
Line Check (Between Display Control Unit and Audio Unit)" .

AV switch check. Refer to AV- 3 3 , "AV S w i tc h C h e c k" .
If above check is OK, replace audio unit.
Steering switch does not operate

Steering switch check. Refer to AV-32, "Steering Switch Check" .

AV switch check. Refer to AV- 3 3 , "AV S w i tc h C h e c k" .
If above check is OK, replace audio unit.
Audio information is not displayed on screen (with
NAVI)

Display unit check. Refer to AV-101, "Self-Diagnosis Mode (DCU)" .
All speakers do not sound

Audio unit

BOSE speaker amp. power supply and ground circuit check. Refer to AV- 3 0 ,
"Power Supply Circuit Inspection" .

BOSE speaker amp. ON signal

BOSE speaker amp.
One or several speakers do not sound

Front door speaker check. Refer to AV- 3 4 , "Sound Is Not Heard From Front
Door Speaker or Front Tweeter" .

Rear door speaker check. Refer to AV- 3 8 , "Sound Is Not Heard From Rear
Door Speaker or Rear Door Tweeter" .

Subwoofer check. Refer to AV-42, "Sound Is Not Heard From Subwoofer" .

Center speaker check. Refer to AV- 4 1 , "Sound Is Not Heard From Center
Speaker" .
Poor sound

Audio unit

BOSE speaker amp.

Speaker
Noisy

Audio unit

BOSE speaker amp.

Electrical equipment (generator, bonding wire, etc.)
Symptom Possible cause
No sound

Audio unit

Antenna feeder, wiring or connections

Antenna amplifier, power supply, wiring or connections
Noisy

Audio unit

Audio unit case ground

Antenna feeder, wiring or connections

Antenna amplifier, power supply, wiring or connections

Noise prevention parts

Each electrical equipment

Wire harness of each piece of electrical equipment
All radio stations stored in memory are deleted

Audio unit power circuit check. Refer to AV- 3 0 , "Power Supply Cir-
cuit Inspection" .

Audio unit